4mm Cylindrical Shank End Mill Long 19mm Cutting Length HSS-Co8 DIN 844 Weldon Z4 Right-Hand - TECWERK

Combining HSS‑Co8 hardness with a 4‑flute long geometry and a secure Weldon shank results in a robust cutter for demanding milling tasks; order the end mill directly via Metav Werkzeuge or consult our specialists for application advice.

End mill DIN 844 Type N Ø4 mm HSS‑Co8, 4‑flute long, Weldon shank (TECWERK)

The End mill DIN 844 Type N Ø4 mm HSS‑Co8 is a long, centre‑cutting 4‑flute cutter with a Weldon shank, engineered for reliable milling of medium‑strength steels and cast materials in workshop and CNC environments

• HSS‑Co8 for enhanced heat and wear resistance
• 4‑flute design with centre cutting for plunge and profile milling
• Weldon shank (cylindrical with drive flat) for secure clamping

Durable substrate and consistent cutting performance

The long solid‑carbide alternative aside, this cutter uses HSS‑Co8, a cobalt‑alloyed high‑speed steel that balances toughness and red‑hardness for continuous operation. With the DIN 844 Type N specification and a Ø4 mm cutting diameter, the geometry is optimised for medium‑duty milling tasks where a predictable flank wear pattern and extended life are required. The material composition allows cutting of workpieces up to approximately 800 N/mm² with an uncoated tool and up to 1,200 N/mm² when a suitable coating is applied, providing clear guidance for process planning and tool selection.

Secure clamping and long‑reach stability for precision machining

The cutter features a Weldon shank (cylindrical shank with drive flat) and a shank diameter of 6 mm, ensuring positive torque transmission and minimal slippage in toolholders. The tool’s effective length 19 mm and overall length 63 mm deliver extended reach while maintaining rigidity for many workshop setups. The 4‑flute configuration improves axial stability and produces a balanced chip load, supporting steady feeds on profile and slot milling. The right‑hand cutting orientation and centre cutting capability enable controlled plunging and step‑down operations without additional pilot holes.

Productivity benefits and economical tool life

Four cutting edges allow for faster material removal and finer surface finishes compared with two‑flute alternatives in the same diameter class. The combination of HSS‑Co8 and a multi‑cut geometry reduces the frequency of tool changes in serial production, which lowers downtime and enhances throughput. For production planners, this means a reliable cutter life curve and easier cost‑benefit calculations when balancing feed rate, spindle speed and depth of cut. The tool’s specification supports consistent cycle times in both single‑part and small‑batch runs.

Material suitability and typical applications

This cutter is very well suited for steel and cast iron workpieces and is conditionally suitable for stainless steel and non‑ferrous alloys; the geometry is designed to handle common workshop materials encountered in mechanical engineering, mould making and maintenance operations. Typical applications include slotting, profile milling and light plunging operations on CNC and conventional milling machines. The long configuration is especially useful for recessed features or parts with limited access where a standard length cutter would not reach.

For dependable long‑reach milling choose the TECWERK HSS‑Co8 end mill and contact Metav Werkzeuge in Emmerich for tailored application advice at info@metav-werkzeuge.com or by phone on +49 2822 7131930

Technical data

• Article number: 2000866372NW
• Manufacturer: TECWERK
• Product type: End mill (DIN 844 Type N)

Facts

• Diameter: 4 mm
• Overall length: 63 mm
• Effective length: 19 mm
• Cutting length: 4 mm
• Shank diameter: 6 mm
• Number of cutting edges: 4
• Cutting direction: Right‑hand cutting
• SKU: 2000866372NW

Special features

• Material: HSS‑Co (cobalt‑alloyed high‑speed steel)
• Centre cutting (capable of plunging)
• Weldon shank (cylindrical with drive flat)
• Long version (extended reach)
• Designed to mill up to ~800 N/mm² uncoated; up to ~1,200 N/mm² with coating
• Material suitability: Steel (very good), Cast iron (very good), Non‑ferrous (conditional), Stainless steel (conditional)

FAQ

What materials can this end mill machine effectively?
The TECWERK end mill with HSS‑Co8 is very well suited to steel and cast iron, and conditionally suitable for stainless steel and non‑ferrous materials depending on cutting data and cooling strategy.

Is the cutter suitable for plunge cutting and pocketing?
Yes. The tool is centre cutting, which permits controlled plunging and pocketing operations in addition to conventional profile milling.

How does the Weldon shank improve performance?
The Weldon shank provides a drive flat for secure clamping and improved torque transfer, reducing the risk of slippage during high feed or interrupted cuts.

What dimensions define the tool’s reach and rigidity?
The tool has an overall length of 63 mm with an effective length of 19 mm, offering extended reach while maintaining adequate rigidity for many workshop and CNC applications.

Can this cutter be used on hardened steels?
The cutter is specified for work up to approximately 800 N/mm² uncoated and up to 1,200 N/mm² with a suitable coating; very hard or hardened steels beyond these values are not within the stated capability.

Manufacturer / Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund